Description
Product Features:
- Complete shower pan assembly kit – includes Prova Pan with offset drain, Prova Mat pan liner, drain flange with 304 stainless steel grate, Prova Seal tubes, and Fasteners (screws and washers)
- Works with Prova Board Plus – designed for use with Prova Board Plus tile backer (sold separately) to complete the waterproofing system
- Durable lightweight design – EPS core pan is installer-friendly, easy to cut, handle, and position directly on the floor
- Certified waterproofing system – ICC-ES approved, bonds with ANSI A118.15 polymer-modified thinset (not premixed mortar or mastic)
- Long-lasting reliability – build tiled showers, bathroom remodels, or walk-in showers with waterproofing and flood test certification
- Supports many tile types – integrated waterproof membrane resists leaks and vapor, suitable for large format tile, porcelain, ceramic, and stone
- Efficient and cost-effective – ready-to-tile system with built-in slope streamlines installation and delivers maintenance-free performance
Product Description:
The Prova Waterproofing Board Pan Assembly Kit delivers a professional waterproof solution for tiled showers, offering the convenience of a prefabricated modular sloped pan system that significantly simplifies the construction of modern tile shower floors. This comprehensive shower pan assembly kit includes the Prova Pan with an offset drain outlet, the Prova Mat pan liner waterproofing membrane, a drain bonding flange with a 304 stainless steel grate, Prova Seal tubes, and Prova Fasteners consisting of installation screws and washers. Together, these components provide contractors, tile installers, builders, and experienced DIY homeowners with the core materials needed to construct a watertight shower base that is ready for tile installation, helping save time, reduce labor costs, and eliminate the complexity associated with traditional mortar shower pans during bathroom renovation and remodeling projects. The system is designed for use alongside the Prova Board Plus tile backer board system (sold separately), allowing installers to build a complete bonded waterproof shower assembly from the floor up.
At the center of the system is the prefabricated Prova Pan shower tray, engineered with a precisely sloped surface that directs water efficiently toward the offset drain outlet. This factory-formed slope removes the need to create a custom mortar bed or mud pan, helping installers achieve consistent drainage performance across the entire shower floor while reducing installation time. The pan is manufactured with a lightweight EPS core construction that provides structural durability while remaining easy to handle, cut, and position during installation. This lightweight design allows the pan to be trimmed on site to accommodate different shower layouts while maintaining reliable support beneath ceramic tile, porcelain tile, and natural stone tile surfaces.
The Prova Mat waterproofing membrane included in the kit forms the primary moisture barrier within the shower assembly. This high-performance waterproof membrane is designed to be bonded directly to the shower pan and surrounding surfaces using polymer-modified thin-set mortar. Once installed, the membrane creates a continuous waterproof layer beneath the tile surface that helps prevent water infiltration into the substrate, protecting the building structure from potential moisture damage. The membrane also provides water vapor resistance and contributes to the durability of the entire shower system by sealing seams and transitions within the installation area.
To ensure a secure connection between the waterproofing layer and the drainage system, the kit includes a drain bonding flange fitted with a corrosion-resistant 304 stainless steel grate. This integrated bonding flange allows the waterproof membrane to connect directly to the drain assembly, creating a watertight transition at the most critical point of the shower floor. The stainless steel grate provides a durable, modern finish while allowing water to flow efficiently into the drain system. The included Prova Seal tubes are used to reinforce seams, drain transitions, and connections within the waterproofing assembly, helping ensure continuous waterproof protection throughout the installation.
Installation is further simplified with the included Prova Fasteners, which consist of specialized screws and washers designed to secure compatible Prova building panels and waterproofing components where required. The entire system is engineered to work with premium polymer-modified thin-set mortars that meet ANSI A118.15 performance standards, ensuring strong adhesion between the waterproofing membrane, substrate, and tile covering without the need for mastics or premixed adhesives.
The integrated waterproofing design supports a wide range of tile finishes commonly used in shower construction, including large-format porcelain tile, ceramic tile, marble, granite, and other natural stone materials. Once installed and properly sealed, the system provides excellent leak protection and vapor resistance, making it suitable for residential bathrooms, walk-in showers, renovation projects, and commercial tiled shower installations. The system is also designed to meet recognized building code standards and supports flood testing procedures, providing installers with confidence that the completed shower assembly meets professional waterproofing requirements.
By combining a prefabricated sloped shower tray, integrated waterproofing membrane, bonding flange drain, stainless steel grate, sealant, and installation fasteners into one coordinated solution, the Prova Waterproofing Board Pan Assembly Kit streamlines the entire shower base installation process. The ready-to-tile system allows contractors and renovators to move efficiently from floor preparation to tile installation while ensuring consistent drainage performance and reliable long-term waterproof protection. Whether used in new construction, commercial building projects, or residential bathroom renovations, the Prova waterproof shower system offers a practical, contractor-focused solution for building durable tiled showers with dependable waterproofing performance.
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